High and large space steel structure floor support plate pouring reverse support system

Abstract

The utility model relates to a reverse support system for pouring a floor support plate of a high and large space steel structure, and belongs to the technical field of steel structure building construction. The system comprises a split head arranged on a steel structure I-shaped steel beam, a reverse support main beam is placed on the split head, a reverse support upper secondary beam and a reverse support lower secondary beam are placed in the vertical direction of the reverse support main beam, and the reverse support upper secondary beam, a floor support plate reinforcing steel bar and the reverse support lower secondary beam are connected through split screws and fixed through butterfly clamps. During pouring, force generated downwards is transmitted to the reverse support upper secondary beams through the opposite-pull screws, then transmitted to the reverse support main beams and then transmitted to the steel structure I-shaped steel beams, and therefore the effect that force on the floor support plate is finally transmitted to the firm and stable steel structure I-shaped steel beams is achieved, and it is guaranteed that collapse accidents do not occur when concrete is poured into the floor support plate. The supporting system is scientific in design, reasonable in structure, easy to construct, safe, reliable, accurate in forming and attractive in appearance, meets the requirement of excellent engineering and meets the use function.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel structure building construction, and particularly relates to a high-space steel structure floor deck pouring counter-support system. Background Art

[0002] As more and more exhibition hall-type buildings are built across the country, the number of tall and large-space steel structures has increased accordingly. However, when pouring the concrete of the floor decking, no support frame is set up under the floor decking, resulting in frequent collapse of the floor decking during pouring.

[0003] Nowadays, many exhibition halls use a steel frame structure + floor deck structure, and the height of the large space can reach more than ten meters. When pouring the floor deck concrete, if a support frame is not set up under the floor deck, it is very easy to collapse; if a support frame is set up under the floor deck, there will be problems such as large construction volume, high consumption of manpower and material resources, high difficulty in setting up and dismantling, difficult transportation, and many construction safety hazards.

[0004] Therefore, for the construction of high-rise steel structure floor decking, it is particularly important to develop a new supporting structure to solve the above problems. Summary of the invention

[0005] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide a high-space steel structure floor deck pouring counter-support system with a new structural design. The structure is formed by arranging a horse stool, a main beam, a secondary beam, a tension screw and other structures on the I-beam of the steel structure to form a reverse force transmission system, thereby not only eliminating the need for the support frame, but also ensuring that the floor deck will not collapse when pouring concrete.

[0006] The utility model is realized through the following technical solutions:

[0007] A high-space steel structure floor deck casting counter-support system comprises steel structure I-beams and floor deck steel bars, wherein a plurality of counter-support main beams are evenly spaced between adjacent steel structure I-beams, the counter-support main beams are perpendicularly arranged to the steel structure I-beams, and horse stools are supported between the two ends of each counter-support main beam and the steel structure I-beams at the corresponding ends, and the horse stools are connected and fixed to the floor deck steel bars; a plurality of groups of counter-support upper secondary beams are evenly spaced above the plurality of counter-support main beams, a plurality of groups of counter-support lower secondary beams are evenly spaced below the floor deck steel bars, the plurality of groups of counter-support upper secondary beams and the plurality of groups of counter-support lower secondary beams are arranged one by one above and below, the counter-support upper secondary beams and the counter-support lower secondary beams are both arranged parallel to the steel structure I-beams and perpendicular to the counter-support main beams, and the corresponding counter-support upper secondary beams are fixed to the counter-support lower secondary beams by tensioning screws.

[0008] Furthermore, each group of upper secondary beams of the counter-support includes two steel pipes, and each group of lower secondary beams of the counter-support includes two steel pipes. The tension screws are arranged through the steel bars of the floor slab, and the upper rod section of the tension screws passes through the two steel pipes of the upper secondary beams of the counter-support and is connected and fixed with a butterfly clamp, and the lower rod section of the tension screws passes through the two steel pipes of the lower secondary beams of the counter-support and is connected and fixed with the butterfly clamp.

[0009] Furthermore, the spacing between the counter-support main beams is 2000 mm, and the spacing between the counter-support upper secondary beams and the counter-support lower secondary beams is 1500 mm.

[0010] Furthermore, the horse stool is made of 25mm diameter HRB400 steel bars, the counter-support main beam is made of 150*150*5mm hot-dip galvanized square tubes, and the steel pipes in the upper secondary beam of the counter-support and the lower secondary beam of the counter-support are φ50*3.6mm steel pipes.

[0011] The utility model is achieved by arranging a horse stool on the I-beam of the steel structure, placing the counter-support main beam on the horse stool, placing the counter-support upper secondary beam and the counter-support lower secondary beam in the vertical direction of the counter-support main beam, connecting the counter-support upper secondary beam, the floor deck steel bar and the counter-support lower secondary beam with tension screws, and fixing them with butterfly clips. During pouring, the downward force generated is transmitted to the counter-support upper secondary beam through the tension screws, and then transmitted to the counter-support main beam, and then transmitted to the steel structure I-beam through the counter-support main beam, thereby achieving the final transmission of the force on the floor deck to the solid and stable steel structure I-beam, so as to ensure that the floor deck does not collapse when pouring concrete. After the concrete reaches the design strength requirement, the butterfly clip is removed, the counter-support main beam and the upper and lower secondary beams of the counter-support are removed, and the tension screws and the horse stool exposed on the concrete surface are cut to the same size as the concrete pouring thickness.

[0012] The support system of the utility model is scientifically designed, rationally structured, simple to construct, safe and reliable. Through theoretical analysis and calculation and on-site tests, the spacing of the anti-support points and the cross-sectional size of the anti-support main beam are calculated according to the load deformation of the I-beam and the floor deck of the steel structure; at the same time, BIM simulation modeling is carried out, and the construction process and process technology are optimized according to the actual structure, so as to achieve the purpose of one-time molding of the concrete of the steel structure floor deck of the high space, and at the same time, the requirements of excellent engineering are met, the use function is satisfied, the molding is accurate, and the appearance is beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings herein are used to provide further description of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0014] Figure 1 It is a plan view of the system of the utility model.

[0015] Figure 2 for Figure 1 aa section view in.

[0016] Figure 3 for Figure 1 bb cross-sectional view in.

[0017] In the figure: 1-steel structure I-beam, 2-floor deck steel bars, 3-counter-support main beam, 4-stool, 5-counter-support upper secondary beam, 6-counter-support lower secondary beam, 7-tension screws, 8-butterfly clips. DETAILED DESCRIPTION

[0018] In order to make those skilled in the art better understand the present invention, the present invention is further explained in detail below with reference to the accompanying drawings and embodiments. It should be noted that the features in the embodiments and embodiments of the present application can be combined with each other without conflict.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower" and the like indicate positions or location relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] like Figures 1 to 3 As shown, a high-space steel structure floor deck casting counter-support system includes a steel structure I-beam 1 and a floor deck steel bar 2.

[0021] A plurality of counter-support main beams 3 are evenly spaced between adjacent steel structure I-beams 1. The counter-support main beams 3 are made of 150*150*5mm hot-dip galvanized square tubes. The spacing between the plurality of counter-support main beams 3 is 2000mm. The counter-support main beams 3 are vertically arranged to the steel structure I-beams 1. A horse stool 4 is supported between the two ends of each counter-support main beam 3 and the steel structure I-beam 1 at the corresponding end. The horse stool 4 is connected and fixed to the floor decking steel bars 2. The horse stool 4 is made of HRB400 steel bars with a diameter of 25mm.

[0022] A plurality of groups of counter-support upper secondary beams 5 are evenly spaced above the plurality of counter-support main beams 3, a plurality of groups of counter-support lower secondary beams 6 are evenly spaced below the floor slab reinforcement bars 2, the plurality of groups of counter-support upper secondary beams 5 and the plurality of groups of counter-support lower secondary beams 6 are arranged one by one in upper and lower directions, the counter-support upper secondary beams 5 and the counter-support lower secondary beams 6 are both arranged parallel to the steel structure I-beam 1 and are both arranged perpendicular to the counter-support main beams 3, the spacing between the counter-support upper secondary beams 5 and the counter-support lower secondary beams 6 is 1500mm, the corresponding upper and lower counter-support upper secondary beams 5 and counter-support lower secondary beams 6 are fastened by tensioning screws 7.

[0023] Each group of counter-support upper secondary beams 5 includes two φ50*3.6mm steel pipes, and each group of counter-support lower secondary beams 6 includes two steel pipes. The middle rod section of the tension screw 7 passes through the floor slab steel bars 2, and the upper rod section of the tension screw 7 passes through the two steel pipes of the counter-support upper secondary beams 5 and is connected and fixed to the butterfly clamp 8. The lower rod section of the tension screw 7 passes through the two steel pipes of the counter-support lower secondary beam 6 and is connected and fixed to the butterfly clamp 8.

[0024] The installation method of the high-space steel structure floor slab pouring counter-support system described in the utility model is as follows:

[0025] 1) Setting of the horse stool 4: After the installation of the floor decking steel bars 2 is completed, place the processed horse stool 4 on the steel structure I-beam 1, and use binding wire to firmly tie the horse stool 4 and the floor decking steel bars 2. The spacing between the horse stools 4 on each steel structure I-beam 1 is 2m.

[0026] 2) Setting of the counter-support main beam 3: Place 150*150*5mm hot-dip galvanized square tube as the counter-support main beam 3 on the horse stool 4. The spacing of the counter-support main beam 3 is consistent with the spacing of the horse stool 4, that is, one is set at an interval of 2m.

[0027] 3) Setting of the upper secondary beam 5 of the counter-support: The upper secondary beam 5 of the counter-support is supported on the upper part of the counter-support main beam 3. The upper secondary beam 5 of the counter-support is two φ50*3.6mm steel pipes. A group of the upper secondary beams 5 of the counter-support is set every 1.5m.

[0028] 4) Setting of the counter-support lower secondary beam 6: The counter-support lower secondary beam 6 is set below the floor decking steel bar 2. The counter-support lower secondary beam 6 is also two φ50*3.6mm steel pipes. A group of counter-support lower secondary beams 6 is set every 1.5m. The counter-support lower secondary beam 6 forms a one-to-one correspondence with the upper counter-support upper secondary beam 5 above. The corresponding two groups of counter-support upper and lower secondary beams 5 and 6 are connected by tension screws 7 and butterfly clips 8 to transfer the load on the floor decking to the upper secondary beam 5 of the counter-support.

[0029] 5) Removal of the counter-support: After the concrete reaches the design strength requirement, remove the butterfly clip 8, remove the counter-support main beam 3, the upper secondary beam 5 and the lower secondary beam 6 of the counter-support, and cut the tension screw 7 and the horse stool 4 exposed on the concrete surface to the same size as the concrete pouring thickness.

[0030] During the above installation process, after the counter-support system is installed, the flatness of the floor deck is checked. The levelness of the steel pipe group of the upper secondary beam 5 of the counter-support directly determines the flatness of the floor deck. The levelness of the steel pipe group is very important, and the levelness deviation shall not be greater than 2mm.

[0031] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A high-space steel structure floor deck pouring counter-support system, comprising a steel structure I-beam and floor deck steel bars, characterized in that: A plurality of counter-support main beams are evenly spaced between adjacent steel structure I-beams. The counter-support main beams are perpendicular to the steel structure I-beams. Both ends of each counter-support main beam are supported by horse stools between the steel structure I-beams at the corresponding ends. The horse stools are connected and fixed to the floor decking steel bars. A plurality of groups of counter-support upper secondary beams are evenly spaced above the plurality of counter-support main beams. A plurality of groups of counter-support lower secondary beams are evenly spaced below the floor decking steel bars. The plurality of groups of counter-support upper secondary beams correspond to the plurality of groups of counter-support lower secondary beams one by one in upper and lower directions. The counter-support upper secondary beams and the counter-support lower secondary beams are parallel to the steel structure I-beams and perpendicular to the counter-support main beams. The corresponding counter-support upper secondary beams and the counter-support lower secondary beams are fixed by tensioning screws.

2. The high-space steel structure floor slab pouring counter-support system according to claim 1 is characterized by: Each set of upper secondary beams of the counter-support includes two steel pipes, and each set of lower secondary beams of the counter-support includes two steel pipes. The tension screws are arranged through the steel bars of the floor slab, and the upper rod section of the tension screws passes through the two steel pipes of the upper secondary beams of the counter-support and is connected and fixed with a butterfly clamp, and the lower rod section of the tension screws passes through the two steel pipes of the lower secondary beams of the counter-support and is connected and fixed with a butterfly clamp.

3. The high-space steel structure floor slab pouring counter-support system according to claim 2 is characterized by: The spacing between the main beams of the counter-support is 2000mm, and the spacing between the upper secondary beams of the counter-support and the lower secondary beams of the counter-support are both 1500mm.

4. The high-space steel structure floor slab pouring counter-support system according to claim 3 is characterized by: The horse stool is made of 25mm diameter HRB400 steel bars, the main beam of the counter-support is made of 150*150*5mm hot-dip galvanized square tubes, and the steel pipes in the upper secondary beam of the counter-support and the lower secondary beam of the counter-support are φ50*3.6mm steel pipes.

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